[FFmpeg-devel] [PATCH] AVCHD/H.264 parser: determination of frame type, question about timestamps

Ivan Schreter schreter
Thu Jan 29 18:56:29 CET 2009

David DeHaven wrote:
> Any interest in clips from the Hauppauge HD-PVR? I can get samples  
> captured in 480i, 480p, 720p and 1080i. I think I have a 576i clip  
> somewhere from a PAL source, if I dig out my signal generator or maybe  
> the VCR with PAL/SECAM output I could produce another one if needed.
It will surely not hurt to have the samples :-)
> The HD-PVR is based on a chip from Ambarella that's also used in AVCHD  
> cameras. The firmware is different (obviously) but I think the streams  
> are similar to what the cameras spit out, MPEG TS with H.264 video and  
> either AAC or AC3 audio. AC3 is either 2 channel stereo or whatever  
> comes in via S/PDIF.
> I figure more samples might help shed some light on the issue... and I  
> do have a vested interest in getting it working properly.
The cause of the issues in processing of interlaced video seems to be 
clear, the solution not.

I've a first version of a patch to handle progressive video keyframes 
correctly, but only after recoding from mpegts to other format (maybe 
there is a bug in seeking in mpegts?).

What was your experience when watching the recorded files when decoded 
via ffmpeg (especially, after seeking)? What bugs do you see there?



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